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Two spacewalks fix coolant loop on International Space Station but third EVA was not so lucky

3 Jan 2014, 14:20 UTC
Two spacewalks fix coolant loop on International Space Station but third EVA was not so lucky
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There were three EVA (Extra Vehicular Activity) sessions conducted by pairs of spacewalking astronauts and cosmonauts during the Christmas period. The first was made on 21 December after NASA deemed that the previously discovered coolant loop fault would need spacewalks to fix.
US Astronauts Rick Mastracchio and Mike Hopkins conducted this EVA to remove the faulty coolant pump unit that suffered a valve problem earlier in December. The astronauts exited the Quest airlock of the ISS at 1201 GMT. The astronauts had an emergency snorkel breathing system inside their helmets in case their spacesuit helmets filled with leaking water as happened for unexplained reasons on a previous EVA. While the astronauts finshed their primary task ahead of schedule astronaut Rick Mastracchio reported discomfort in his suit including cold feet so the EVA was completed early. The astronauts re-entered the Quest airlock at 1729 GMT where a spacesuit issue was discovered in Mastracchio’s suit raising concerns that water may again have got into a suit component. As a precaution a second EVA to continue the pump replacement work was delayed from 23 December to 24 December.
This second spacewalk went without a hitch on 24 December. It was again performed ...

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